Magnetic relaxation in chain-of-spheres ferromagnetic particles
Journal
Journal of Magnetism and Magnetic Materials
Journal Volume
239
Journal Issue
1月3日
Pages
73-75
Date Issued
2002
Author(s)
Yang, J. S.
Abstract
The thermal activation of elongated ferromagnetic particles is analyzed using a chain-of-spheres model. The spheres within the chain are assumed to be coupled magnetically with dipolar interaction. The effect of uniaxial magnetocrystalline anisotropy along the chain is also taken into account. It was shown that the behavior of thermal switching critically depends on the relative strength of shape anisotropy and magnetocrystalline anisotropy, field orientation, sweep field rate and temperature. © 2002 Elsevier Science B.V. All rights reserved.
Type
journal article